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#arrow-contributors
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# arrow-contributors
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Satyam Agarwal

12/12/2020, 4:38 AM
Hei. I just pulled
arrow-fx
, thinking to raise a PR (or atleast trying to), so I want to build the project from intellij. But I am getting this :
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Kotlin: Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath:
    class arrow.core.computations.EitherEffect, unresolved supertypes: arrow.continuations.Effect
Can anyone help me 🙂 A lot of files don’t compile because computation class are missing, I am guessing because of error above. Using jdk 1.8, but it has scala dep as well, so I am getting this too :
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scalac: '13' is not a valid choice for '-target'
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simon.vergauwen

12/12/2020, 9:56 AM
Hey @Satyam Agarwal, Yes there was a conflict between merging Arrow Core and Arrow Fx. I raised 3 PRs this morning to fix the build. https://github.com/arrow-kt/arrow-fx/pull/323 https://github.com/arrow-kt/arrow-incubator/pull/137 https://github.com/arrow-kt/arrow-core/pull/265
I'm not sure about the Scala issues tho
This has been merged and is fixed
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Satyam Agarwal

12/12/2020, 5:16 PM
Awesome. Thanks. I’ll pull.
compiler daemon dies because of memory. I am giving intellij 2 gb. Will increase it to 3 and see.
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The root cause java.lang.OutOfMemoryError was thrown at: unknown
	at org.jetbrains.kotlin.codegen.TransformationMethodVisitor.visitEnd(TransformationMethodVisitor.kt:92)
	at org.jetbrains.org.objectweb.asm.MethodVisitor.visitEnd(MethodVisitor.java:778)
	at org.jetbrains.kotlin.codegen.FunctionCodegen.endVisit(FunctionCodegen.java:952)
	... 77 more
Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded
Using macOS with 16 gigs.
arrow-benchmark-fx still doesn’t work, but I am able to run tests so thats good enough
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simon.vergauwen

12/13/2020, 3:52 PM
Arrow Benchmark Fx should be runnable, but it doesn't run by default. What's wrong with it?
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Satyam Agarwal

12/13/2020, 4:50 PM
I don’t know where jvm13 is coming from, I’ve set java,kotlin,scala compilers to use 1.8
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simon.vergauwen

12/13/2020, 5:00 PM
That's weird I've never run into that. I also have Scala installed
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